27745544544 has 48 divisors (see below), whose sum is σ = 72998069760. Its totient is φ = 9227433600.

The previous prime is 27745544539. The next prime is 27745544597. The reversal of 27745544544 is 44544554772.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287032 + ... + 371319.

It is an arithmetic number, because the mean of its divisors is an integer number (1520793120).

Almost surely, 2^27745544544 is an apocalyptic number.

27745544544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27745544544 is an abundant number, since it is smaller than the sum of its proper divisors (45252525216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27745544544 is a wasteful number, since it uses less digits than its factorization.

27745544544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658803 (or 658795 counting only the distinct ones).

The product of its digits is 12544000, while the sum is 51.

The spelling of 27745544544 in words is "twenty-seven billion, seven hundred forty-five million, five hundred forty-four thousand, five hundred forty-four".